1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
17
18#include <linux/types.h>
19#include <linux/interrupt.h>
20#include <linux/bitops.h>
21#include <linux/skbuff.h>
22
23#include "../nfc.h"
24#include <net/nfc/nci.h>
25#include <net/nfc/nci_core.h>
26#include <linux/nfc.h>
27
28
29
30static void nci_core_reset_ntf_packet(struct nci_dev *ndev,
31 const struct sk_buff *skb)
32{
33
34 const struct nci_core_reset_ntf *ntf = (void *)skb->data;
35
36 ndev->nci_ver = ntf->nci_ver;
37 pr_debug("nci_ver 0x%x, config_status 0x%x\n",
38 ntf->nci_ver, ntf->config_status);
39
40 ndev->manufact_id = ntf->manufact_id;
41 ndev->manufact_specific_info =
42 __le32_to_cpu(ntf->manufact_specific_info);
43
44 nci_req_complete(ndev, NCI_STATUS_OK);
45}
46
47static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
48 struct sk_buff *skb)
49{
50 struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
51 struct nci_conn_info *conn_info;
52 int i;
53
54 pr_debug("num_entries %d\n", ntf->num_entries);
55
56 if (ntf->num_entries > NCI_MAX_NUM_CONN)
57 ntf->num_entries = NCI_MAX_NUM_CONN;
58
59
60 for (i = 0; i < ntf->num_entries; i++) {
61 ntf->conn_entries[i].conn_id =
62 nci_conn_id(&ntf->conn_entries[i].conn_id);
63
64 pr_debug("entry[%d]: conn_id %d, credits %d\n",
65 i, ntf->conn_entries[i].conn_id,
66 ntf->conn_entries[i].credits);
67
68 conn_info = nci_get_conn_info_by_conn_id(ndev,
69 ntf->conn_entries[i].conn_id);
70 if (!conn_info)
71 return;
72
73 atomic_add(ntf->conn_entries[i].credits,
74 &conn_info->credits_cnt);
75 }
76
77
78 if (!skb_queue_empty(&ndev->tx_q))
79 queue_work(ndev->tx_wq, &ndev->tx_work);
80}
81
82static void nci_core_generic_error_ntf_packet(struct nci_dev *ndev,
83 const struct sk_buff *skb)
84{
85 __u8 status = skb->data[0];
86
87 pr_debug("status 0x%x\n", status);
88
89 if (atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) {
90
91
92 nci_req_complete(ndev, status);
93 }
94}
95
96static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
97 struct sk_buff *skb)
98{
99 struct nci_core_intf_error_ntf *ntf = (void *) skb->data;
100
101 ntf->conn_id = nci_conn_id(&ntf->conn_id);
102
103 pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id);
104
105
106 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
107 nci_data_exchange_complete(ndev, NULL, ntf->conn_id, -EIO);
108}
109
110static const __u8 *
111nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
112 struct rf_tech_specific_params_nfca_poll *nfca_poll,
113 const __u8 *data)
114{
115 nfca_poll->sens_res = __le16_to_cpu(*((__le16 *)data));
116 data += 2;
117
118 nfca_poll->nfcid1_len = min_t(__u8, *data++, NFC_NFCID1_MAXSIZE);
119
120 pr_debug("sens_res 0x%x, nfcid1_len %d\n",
121 nfca_poll->sens_res, nfca_poll->nfcid1_len);
122
123 memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
124 data += nfca_poll->nfcid1_len;
125
126 nfca_poll->sel_res_len = *data++;
127
128 if (nfca_poll->sel_res_len != 0)
129 nfca_poll->sel_res = *data++;
130
131 pr_debug("sel_res_len %d, sel_res 0x%x\n",
132 nfca_poll->sel_res_len,
133 nfca_poll->sel_res);
134
135 return data;
136}
137
138static const __u8 *
139nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
140 struct rf_tech_specific_params_nfcb_poll *nfcb_poll,
141 const __u8 *data)
142{
143 nfcb_poll->sensb_res_len = min_t(__u8, *data++, NFC_SENSB_RES_MAXSIZE);
144
145 pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
146
147 memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len);
148 data += nfcb_poll->sensb_res_len;
149
150 return data;
151}
152
153static const __u8 *
154nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
155 struct rf_tech_specific_params_nfcf_poll *nfcf_poll,
156 const __u8 *data)
157{
158 nfcf_poll->bit_rate = *data++;
159 nfcf_poll->sensf_res_len = min_t(__u8, *data++, NFC_SENSF_RES_MAXSIZE);
160
161 pr_debug("bit_rate %d, sensf_res_len %d\n",
162 nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
163
164 memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len);
165 data += nfcf_poll->sensf_res_len;
166
167 return data;
168}
169
170static const __u8 *
171nci_extract_rf_params_nfcv_passive_poll(struct nci_dev *ndev,
172 struct rf_tech_specific_params_nfcv_poll *nfcv_poll,
173 const __u8 *data)
174{
175 ++data;
176 nfcv_poll->dsfid = *data++;
177 memcpy(nfcv_poll->uid, data, NFC_ISO15693_UID_MAXSIZE);
178 data += NFC_ISO15693_UID_MAXSIZE;
179 return data;
180}
181
182static const __u8 *
183nci_extract_rf_params_nfcf_passive_listen(struct nci_dev *ndev,
184 struct rf_tech_specific_params_nfcf_listen *nfcf_listen,
185 const __u8 *data)
186{
187 nfcf_listen->local_nfcid2_len = min_t(__u8, *data++,
188 NFC_NFCID2_MAXSIZE);
189 memcpy(nfcf_listen->local_nfcid2, data, nfcf_listen->local_nfcid2_len);
190 data += nfcf_listen->local_nfcid2_len;
191
192 return data;
193}
194
195static __u32 nci_get_prop_rf_protocol(struct nci_dev *ndev, __u8 rf_protocol)
196{
197 if (ndev->ops->get_rfprotocol)
198 return ndev->ops->get_rfprotocol(ndev, rf_protocol);
199 return 0;
200}
201
202static int nci_add_new_protocol(struct nci_dev *ndev,
203 struct nfc_target *target,
204 __u8 rf_protocol,
205 __u8 rf_tech_and_mode,
206 const void *params)
207{
208 const struct rf_tech_specific_params_nfca_poll *nfca_poll;
209 const struct rf_tech_specific_params_nfcb_poll *nfcb_poll;
210 const struct rf_tech_specific_params_nfcf_poll *nfcf_poll;
211 const struct rf_tech_specific_params_nfcv_poll *nfcv_poll;
212 __u32 protocol;
213
214 if (rf_protocol == NCI_RF_PROTOCOL_T1T)
215 protocol = NFC_PROTO_JEWEL_MASK;
216 else if (rf_protocol == NCI_RF_PROTOCOL_T2T)
217 protocol = NFC_PROTO_MIFARE_MASK;
218 else if (rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
219 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE)
220 protocol = NFC_PROTO_ISO14443_MASK;
221 else
222 protocol = NFC_PROTO_ISO14443_B_MASK;
223 else if (rf_protocol == NCI_RF_PROTOCOL_T3T)
224 protocol = NFC_PROTO_FELICA_MASK;
225 else if (rf_protocol == NCI_RF_PROTOCOL_NFC_DEP)
226 protocol = NFC_PROTO_NFC_DEP_MASK;
227 else if (rf_protocol == NCI_RF_PROTOCOL_T5T)
228 protocol = NFC_PROTO_ISO15693_MASK;
229 else
230 protocol = nci_get_prop_rf_protocol(ndev, rf_protocol);
231
232 if (!(protocol & ndev->poll_prots)) {
233 pr_err("the target found does not have the desired protocol\n");
234 return -EPROTO;
235 }
236
237 if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) {
238 nfca_poll = (struct rf_tech_specific_params_nfca_poll *)params;
239
240 target->sens_res = nfca_poll->sens_res;
241 target->sel_res = nfca_poll->sel_res;
242 target->nfcid1_len = nfca_poll->nfcid1_len;
243 if (target->nfcid1_len > 0) {
244 memcpy(target->nfcid1, nfca_poll->nfcid1,
245 target->nfcid1_len);
246 }
247 } else if (rf_tech_and_mode == NCI_NFC_B_PASSIVE_POLL_MODE) {
248 nfcb_poll = (struct rf_tech_specific_params_nfcb_poll *)params;
249
250 target->sensb_res_len = nfcb_poll->sensb_res_len;
251 if (target->sensb_res_len > 0) {
252 memcpy(target->sensb_res, nfcb_poll->sensb_res,
253 target->sensb_res_len);
254 }
255 } else if (rf_tech_and_mode == NCI_NFC_F_PASSIVE_POLL_MODE) {
256 nfcf_poll = (struct rf_tech_specific_params_nfcf_poll *)params;
257
258 target->sensf_res_len = nfcf_poll->sensf_res_len;
259 if (target->sensf_res_len > 0) {
260 memcpy(target->sensf_res, nfcf_poll->sensf_res,
261 target->sensf_res_len);
262 }
263 } else if (rf_tech_and_mode == NCI_NFC_V_PASSIVE_POLL_MODE) {
264 nfcv_poll = (struct rf_tech_specific_params_nfcv_poll *)params;
265
266 target->is_iso15693 = 1;
267 target->iso15693_dsfid = nfcv_poll->dsfid;
268 memcpy(target->iso15693_uid, nfcv_poll->uid, NFC_ISO15693_UID_MAXSIZE);
269 } else {
270 pr_err("unsupported rf_tech_and_mode 0x%x\n", rf_tech_and_mode);
271 return -EPROTO;
272 }
273
274 target->supported_protocols |= protocol;
275
276 pr_debug("protocol 0x%x\n", protocol);
277
278 return 0;
279}
280
281static void nci_add_new_target(struct nci_dev *ndev,
282 const struct nci_rf_discover_ntf *ntf)
283{
284 struct nfc_target *target;
285 int i, rc;
286
287 for (i = 0; i < ndev->n_targets; i++) {
288 target = &ndev->targets[i];
289 if (target->logical_idx == ntf->rf_discovery_id) {
290
291 nci_add_new_protocol(ndev, target, ntf->rf_protocol,
292 ntf->rf_tech_and_mode,
293 &ntf->rf_tech_specific_params);
294 return;
295 }
296 }
297
298
299 if (ndev->n_targets == NCI_MAX_DISCOVERED_TARGETS) {
300 pr_debug("not enough room, ignoring new target...\n");
301 return;
302 }
303
304 target = &ndev->targets[ndev->n_targets];
305
306 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
307 ntf->rf_tech_and_mode,
308 &ntf->rf_tech_specific_params);
309 if (!rc) {
310 target->logical_idx = ntf->rf_discovery_id;
311 ndev->n_targets++;
312
313 pr_debug("logical idx %d, n_targets %d\n", target->logical_idx,
314 ndev->n_targets);
315 }
316}
317
318void nci_clear_target_list(struct nci_dev *ndev)
319{
320 memset(ndev->targets, 0,
321 (sizeof(struct nfc_target)*NCI_MAX_DISCOVERED_TARGETS));
322
323 ndev->n_targets = 0;
324}
325
326static void nci_rf_discover_ntf_packet(struct nci_dev *ndev,
327 const struct sk_buff *skb)
328{
329 struct nci_rf_discover_ntf ntf;
330 const __u8 *data = skb->data;
331 bool add_target = true;
332
333 ntf.rf_discovery_id = *data++;
334 ntf.rf_protocol = *data++;
335 ntf.rf_tech_and_mode = *data++;
336 ntf.rf_tech_specific_params_len = *data++;
337
338 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
339 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
340 pr_debug("rf_tech_and_mode 0x%x\n", ntf.rf_tech_and_mode);
341 pr_debug("rf_tech_specific_params_len %d\n",
342 ntf.rf_tech_specific_params_len);
343
344 if (ntf.rf_tech_specific_params_len > 0) {
345 switch (ntf.rf_tech_and_mode) {
346 case NCI_NFC_A_PASSIVE_POLL_MODE:
347 data = nci_extract_rf_params_nfca_passive_poll(ndev,
348 &(ntf.rf_tech_specific_params.nfca_poll), data);
349 break;
350
351 case NCI_NFC_B_PASSIVE_POLL_MODE:
352 data = nci_extract_rf_params_nfcb_passive_poll(ndev,
353 &(ntf.rf_tech_specific_params.nfcb_poll), data);
354 break;
355
356 case NCI_NFC_F_PASSIVE_POLL_MODE:
357 data = nci_extract_rf_params_nfcf_passive_poll(ndev,
358 &(ntf.rf_tech_specific_params.nfcf_poll), data);
359 break;
360
361 case NCI_NFC_V_PASSIVE_POLL_MODE:
362 data = nci_extract_rf_params_nfcv_passive_poll(ndev,
363 &(ntf.rf_tech_specific_params.nfcv_poll), data);
364 break;
365
366 default:
367 pr_err("unsupported rf_tech_and_mode 0x%x\n",
368 ntf.rf_tech_and_mode);
369 data += ntf.rf_tech_specific_params_len;
370 add_target = false;
371 }
372 }
373
374 ntf.ntf_type = *data++;
375 pr_debug("ntf_type %d\n", ntf.ntf_type);
376
377 if (add_target == true)
378 nci_add_new_target(ndev, &ntf);
379
380 if (ntf.ntf_type == NCI_DISCOVER_NTF_TYPE_MORE) {
381 atomic_set(&ndev->state, NCI_W4_ALL_DISCOVERIES);
382 } else {
383 atomic_set(&ndev->state, NCI_W4_HOST_SELECT);
384 nfc_targets_found(ndev->nfc_dev, ndev->targets,
385 ndev->n_targets);
386 }
387}
388
389static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
390 struct nci_rf_intf_activated_ntf *ntf,
391 const __u8 *data)
392{
393 struct activation_params_nfca_poll_iso_dep *nfca_poll;
394 struct activation_params_nfcb_poll_iso_dep *nfcb_poll;
395
396 switch (ntf->activation_rf_tech_and_mode) {
397 case NCI_NFC_A_PASSIVE_POLL_MODE:
398 nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
399 nfca_poll->rats_res_len = min_t(__u8, *data++, 20);
400 pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
401 if (nfca_poll->rats_res_len > 0) {
402 memcpy(nfca_poll->rats_res,
403 data, nfca_poll->rats_res_len);
404 }
405 break;
406
407 case NCI_NFC_B_PASSIVE_POLL_MODE:
408 nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
409 nfcb_poll->attrib_res_len = min_t(__u8, *data++, 50);
410 pr_debug("attrib_res_len %d\n", nfcb_poll->attrib_res_len);
411 if (nfcb_poll->attrib_res_len > 0) {
412 memcpy(nfcb_poll->attrib_res,
413 data, nfcb_poll->attrib_res_len);
414 }
415 break;
416
417 default:
418 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
419 ntf->activation_rf_tech_and_mode);
420 return NCI_STATUS_RF_PROTOCOL_ERROR;
421 }
422
423 return NCI_STATUS_OK;
424}
425
426static int nci_extract_activation_params_nfc_dep(struct nci_dev *ndev,
427 struct nci_rf_intf_activated_ntf *ntf,
428 const __u8 *data)
429{
430 struct activation_params_poll_nfc_dep *poll;
431 struct activation_params_listen_nfc_dep *listen;
432
433 switch (ntf->activation_rf_tech_and_mode) {
434 case NCI_NFC_A_PASSIVE_POLL_MODE:
435 case NCI_NFC_F_PASSIVE_POLL_MODE:
436 poll = &ntf->activation_params.poll_nfc_dep;
437 poll->atr_res_len = min_t(__u8, *data++,
438 NFC_ATR_RES_MAXSIZE - 2);
439 pr_debug("atr_res_len %d\n", poll->atr_res_len);
440 if (poll->atr_res_len > 0)
441 memcpy(poll->atr_res, data, poll->atr_res_len);
442 break;
443
444 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
445 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
446 listen = &ntf->activation_params.listen_nfc_dep;
447 listen->atr_req_len = min_t(__u8, *data++,
448 NFC_ATR_REQ_MAXSIZE - 2);
449 pr_debug("atr_req_len %d\n", listen->atr_req_len);
450 if (listen->atr_req_len > 0)
451 memcpy(listen->atr_req, data, listen->atr_req_len);
452 break;
453
454 default:
455 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
456 ntf->activation_rf_tech_and_mode);
457 return NCI_STATUS_RF_PROTOCOL_ERROR;
458 }
459
460 return NCI_STATUS_OK;
461}
462
463static void nci_target_auto_activated(struct nci_dev *ndev,
464 const struct nci_rf_intf_activated_ntf *ntf)
465{
466 struct nfc_target *target;
467 int rc;
468
469 target = &ndev->targets[ndev->n_targets];
470
471 rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
472 ntf->activation_rf_tech_and_mode,
473 &ntf->rf_tech_specific_params);
474 if (rc)
475 return;
476
477 target->logical_idx = ntf->rf_discovery_id;
478 ndev->n_targets++;
479
480 pr_debug("logical idx %d, n_targets %d\n",
481 target->logical_idx, ndev->n_targets);
482
483 nfc_targets_found(ndev->nfc_dev, ndev->targets, ndev->n_targets);
484}
485
486static int nci_store_general_bytes_nfc_dep(struct nci_dev *ndev,
487 const struct nci_rf_intf_activated_ntf *ntf)
488{
489 ndev->remote_gb_len = 0;
490
491 if (ntf->activation_params_len <= 0)
492 return NCI_STATUS_OK;
493
494 switch (ntf->activation_rf_tech_and_mode) {
495 case NCI_NFC_A_PASSIVE_POLL_MODE:
496 case NCI_NFC_F_PASSIVE_POLL_MODE:
497 ndev->remote_gb_len = min_t(__u8,
498 (ntf->activation_params.poll_nfc_dep.atr_res_len
499 - NFC_ATR_RES_GT_OFFSET),
500 NFC_ATR_RES_GB_MAXSIZE);
501 memcpy(ndev->remote_gb,
502 (ntf->activation_params.poll_nfc_dep.atr_res
503 + NFC_ATR_RES_GT_OFFSET),
504 ndev->remote_gb_len);
505 break;
506
507 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
508 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
509 ndev->remote_gb_len = min_t(__u8,
510 (ntf->activation_params.listen_nfc_dep.atr_req_len
511 - NFC_ATR_REQ_GT_OFFSET),
512 NFC_ATR_REQ_GB_MAXSIZE);
513 memcpy(ndev->remote_gb,
514 (ntf->activation_params.listen_nfc_dep.atr_req
515 + NFC_ATR_REQ_GT_OFFSET),
516 ndev->remote_gb_len);
517 break;
518
519 default:
520 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
521 ntf->activation_rf_tech_and_mode);
522 return NCI_STATUS_RF_PROTOCOL_ERROR;
523 }
524
525 return NCI_STATUS_OK;
526}
527
528static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
529 const struct sk_buff *skb)
530{
531 struct nci_conn_info *conn_info;
532 struct nci_rf_intf_activated_ntf ntf;
533 const __u8 *data = skb->data;
534 int err = NCI_STATUS_OK;
535
536 ntf.rf_discovery_id = *data++;
537 ntf.rf_interface = *data++;
538 ntf.rf_protocol = *data++;
539 ntf.activation_rf_tech_and_mode = *data++;
540 ntf.max_data_pkt_payload_size = *data++;
541 ntf.initial_num_credits = *data++;
542 ntf.rf_tech_specific_params_len = *data++;
543
544 pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
545 pr_debug("rf_interface 0x%x\n", ntf.rf_interface);
546 pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
547 pr_debug("activation_rf_tech_and_mode 0x%x\n",
548 ntf.activation_rf_tech_and_mode);
549 pr_debug("max_data_pkt_payload_size 0x%x\n",
550 ntf.max_data_pkt_payload_size);
551 pr_debug("initial_num_credits 0x%x\n",
552 ntf.initial_num_credits);
553 pr_debug("rf_tech_specific_params_len %d\n",
554 ntf.rf_tech_specific_params_len);
555
556
557
558
559
560 if (ntf.rf_interface == NCI_RF_INTERFACE_NFCEE_DIRECT)
561 goto listen;
562
563 if (ntf.rf_tech_specific_params_len > 0) {
564 switch (ntf.activation_rf_tech_and_mode) {
565 case NCI_NFC_A_PASSIVE_POLL_MODE:
566 data = nci_extract_rf_params_nfca_passive_poll(ndev,
567 &(ntf.rf_tech_specific_params.nfca_poll), data);
568 break;
569
570 case NCI_NFC_B_PASSIVE_POLL_MODE:
571 data = nci_extract_rf_params_nfcb_passive_poll(ndev,
572 &(ntf.rf_tech_specific_params.nfcb_poll), data);
573 break;
574
575 case NCI_NFC_F_PASSIVE_POLL_MODE:
576 data = nci_extract_rf_params_nfcf_passive_poll(ndev,
577 &(ntf.rf_tech_specific_params.nfcf_poll), data);
578 break;
579
580 case NCI_NFC_V_PASSIVE_POLL_MODE:
581 data = nci_extract_rf_params_nfcv_passive_poll(ndev,
582 &(ntf.rf_tech_specific_params.nfcv_poll), data);
583 break;
584
585 case NCI_NFC_A_PASSIVE_LISTEN_MODE:
586
587 break;
588
589 case NCI_NFC_F_PASSIVE_LISTEN_MODE:
590 data = nci_extract_rf_params_nfcf_passive_listen(ndev,
591 &(ntf.rf_tech_specific_params.nfcf_listen),
592 data);
593 break;
594
595 default:
596 pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
597 ntf.activation_rf_tech_and_mode);
598 err = NCI_STATUS_RF_PROTOCOL_ERROR;
599 goto exit;
600 }
601 }
602
603 ntf.data_exch_rf_tech_and_mode = *data++;
604 ntf.data_exch_tx_bit_rate = *data++;
605 ntf.data_exch_rx_bit_rate = *data++;
606 ntf.activation_params_len = *data++;
607
608 pr_debug("data_exch_rf_tech_and_mode 0x%x\n",
609 ntf.data_exch_rf_tech_and_mode);
610 pr_debug("data_exch_tx_bit_rate 0x%x\n", ntf.data_exch_tx_bit_rate);
611 pr_debug("data_exch_rx_bit_rate 0x%x\n", ntf.data_exch_rx_bit_rate);
612 pr_debug("activation_params_len %d\n", ntf.activation_params_len);
613
614 if (ntf.activation_params_len > 0) {
615 switch (ntf.rf_interface) {
616 case NCI_RF_INTERFACE_ISO_DEP:
617 err = nci_extract_activation_params_iso_dep(ndev,
618 &ntf, data);
619 break;
620
621 case NCI_RF_INTERFACE_NFC_DEP:
622 err = nci_extract_activation_params_nfc_dep(ndev,
623 &ntf, data);
624 break;
625
626 case NCI_RF_INTERFACE_FRAME:
627
628 break;
629
630 default:
631 pr_err("unsupported rf_interface 0x%x\n",
632 ntf.rf_interface);
633 err = NCI_STATUS_RF_PROTOCOL_ERROR;
634 break;
635 }
636 }
637
638exit:
639 if (err == NCI_STATUS_OK) {
640 conn_info = ndev->rf_conn_info;
641 if (!conn_info)
642 return;
643
644 conn_info->max_pkt_payload_len = ntf.max_data_pkt_payload_size;
645 conn_info->initial_num_credits = ntf.initial_num_credits;
646
647
648 atomic_set(&conn_info->credits_cnt,
649 conn_info->initial_num_credits);
650
651
652 if (ntf.rf_interface == NCI_RF_INTERFACE_NFC_DEP) {
653 err = nci_store_general_bytes_nfc_dep(ndev, &ntf);
654 if (err != NCI_STATUS_OK)
655 pr_err("unable to store general bytes\n");
656 }
657 }
658
659 if (!(ntf.activation_rf_tech_and_mode & NCI_RF_TECH_MODE_LISTEN_MASK)) {
660
661 if (atomic_read(&ndev->state) == NCI_DISCOVERY) {
662
663
664 atomic_set(&ndev->state, NCI_POLL_ACTIVE);
665 if (err == NCI_STATUS_OK)
666 nci_target_auto_activated(ndev, &ntf);
667 } else {
668
669
670 atomic_set(&ndev->state, NCI_POLL_ACTIVE);
671 nci_req_complete(ndev, err);
672 }
673 } else {
674listen:
675
676 atomic_set(&ndev->state, NCI_LISTEN_ACTIVE);
677 if (err == NCI_STATUS_OK &&
678 ntf.rf_protocol == NCI_RF_PROTOCOL_NFC_DEP) {
679 err = nfc_tm_activated(ndev->nfc_dev,
680 NFC_PROTO_NFC_DEP_MASK,
681 NFC_COMM_PASSIVE,
682 ndev->remote_gb,
683 ndev->remote_gb_len);
684 if (err != NCI_STATUS_OK)
685 pr_err("error when signaling tm activation\n");
686 }
687 }
688}
689
690static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
691 const struct sk_buff *skb)
692{
693 const struct nci_conn_info *conn_info;
694 const struct nci_rf_deactivate_ntf *ntf = (void *)skb->data;
695
696 pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
697
698 conn_info = ndev->rf_conn_info;
699 if (!conn_info)
700 return;
701
702
703 skb_queue_purge(&ndev->tx_q);
704
705
706 if (ndev->rx_data_reassembly) {
707 kfree_skb(ndev->rx_data_reassembly);
708 ndev->rx_data_reassembly = NULL;
709 }
710
711
712 if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
713 nci_data_exchange_complete(ndev, NULL, NCI_STATIC_RF_CONN_ID,
714 -EIO);
715
716 switch (ntf->type) {
717 case NCI_DEACTIVATE_TYPE_IDLE_MODE:
718 nci_clear_target_list(ndev);
719 atomic_set(&ndev->state, NCI_IDLE);
720 break;
721 case NCI_DEACTIVATE_TYPE_SLEEP_MODE:
722 case NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE:
723 atomic_set(&ndev->state, NCI_W4_HOST_SELECT);
724 break;
725 case NCI_DEACTIVATE_TYPE_DISCOVERY:
726 nci_clear_target_list(ndev);
727 atomic_set(&ndev->state, NCI_DISCOVERY);
728 break;
729 }
730
731 nci_req_complete(ndev, NCI_STATUS_OK);
732}
733
734static void nci_nfcee_discover_ntf_packet(struct nci_dev *ndev,
735 const struct sk_buff *skb)
736{
737 u8 status = NCI_STATUS_OK;
738 const struct nci_nfcee_discover_ntf *nfcee_ntf =
739 (struct nci_nfcee_discover_ntf *)skb->data;
740
741 pr_debug("\n");
742
743
744
745
746
747
748 ndev->hci_dev->nfcee_id = nfcee_ntf->nfcee_id;
749 ndev->cur_params.id = nfcee_ntf->nfcee_id;
750
751 nci_req_complete(ndev, status);
752}
753
754static void nci_nfcee_action_ntf_packet(struct nci_dev *ndev,
755 const struct sk_buff *skb)
756{
757 pr_debug("\n");
758}
759
760void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
761{
762 __u16 ntf_opcode = nci_opcode(skb->data);
763
764 pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
765 nci_pbf(skb->data),
766 nci_opcode_gid(ntf_opcode),
767 nci_opcode_oid(ntf_opcode),
768 nci_plen(skb->data));
769
770
771 skb_pull(skb, NCI_CTRL_HDR_SIZE);
772
773 if (nci_opcode_gid(ntf_opcode) == NCI_GID_PROPRIETARY) {
774 if (nci_prop_ntf_packet(ndev, ntf_opcode, skb) == -ENOTSUPP) {
775 pr_err("unsupported ntf opcode 0x%x\n",
776 ntf_opcode);
777 }
778
779 goto end;
780 }
781
782 switch (ntf_opcode) {
783 case NCI_OP_CORE_RESET_NTF:
784 nci_core_reset_ntf_packet(ndev, skb);
785 break;
786
787 case NCI_OP_CORE_CONN_CREDITS_NTF:
788 nci_core_conn_credits_ntf_packet(ndev, skb);
789 break;
790
791 case NCI_OP_CORE_GENERIC_ERROR_NTF:
792 nci_core_generic_error_ntf_packet(ndev, skb);
793 break;
794
795 case NCI_OP_CORE_INTF_ERROR_NTF:
796 nci_core_conn_intf_error_ntf_packet(ndev, skb);
797 break;
798
799 case NCI_OP_RF_DISCOVER_NTF:
800 nci_rf_discover_ntf_packet(ndev, skb);
801 break;
802
803 case NCI_OP_RF_INTF_ACTIVATED_NTF:
804 nci_rf_intf_activated_ntf_packet(ndev, skb);
805 break;
806
807 case NCI_OP_RF_DEACTIVATE_NTF:
808 nci_rf_deactivate_ntf_packet(ndev, skb);
809 break;
810
811 case NCI_OP_NFCEE_DISCOVER_NTF:
812 nci_nfcee_discover_ntf_packet(ndev, skb);
813 break;
814
815 case NCI_OP_RF_NFCEE_ACTION_NTF:
816 nci_nfcee_action_ntf_packet(ndev, skb);
817 break;
818
819 default:
820 pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
821 break;
822 }
823
824 nci_core_ntf_packet(ndev, ntf_opcode, skb);
825end:
826 kfree_skb(skb);
827}
828
